Piston internal combustion engine with cylinder stars arranged one behind the other in alpha common frame



Sept. 20,1932. E, W|PPERMANN 1,878,561 I PISTON INTERNAL COMBUSTIONENGINE WITH CYLINDER STARS ARRANGED ONE BEHIND THE vOT'IER IN A COMMONFRAME Sept. 20, 1932. E. WIPPERMANN 1,878,561

PIsToN INTERNAL coMBUsTIoN ENGINE WITH CYLINDER STARS ARRANGED o'NE-BEHIND THE OTHER IN A COMMON FRAME Filed Jan. 8, 1951 2 Sheets-Sheet 2JM I Patented Sept. 20, 1932 UNITED STATES PATENT- OFFICE ERICHWIPPERMANN, OF HAGEN-EELSTERN, GERMANY PISTON INTERNAL COMBUSTION ENGINEWITH `GYLINIDEE STARS ARRANGED ONE BEHIND THE OTHER IN A. COMMON FRAMEApplication led January 8, 1931, Serial No.

This invention relates to piston internal combustion engines withcylinder stars arranged one behind the other in a common frame.

In the known constructions of such engines the cylinder frame isstationary so that the upwardly directed cylinders have too littlelubrication and the lower cylinders too ample lubrication which leads totrouble as regards ignition and to soiling of the pistons and valves.

This invention overcomes this objection in that a driving device isprovided by means of which the cylinder frame can be. slowly rotatedwhilst the engine is running. Besides obtaining a uniform lubrication, auniform distribution of the wear of the entire engine is also ensuredand at the same time the fitting and supplying of water cooling for thecylinders is rendered possible. speed of rotation of the cylinder frame,it is possible to control the engine accurately.

The liquid fuel may preferably be supplied by a distributor rotatingwith the cylinder frame and to which the individual branch pipes leadingto the carburetors are connected.

Further a separate cooling device with a pump may be provided for eachrow of cylinders, the suction pipe of each pump taking cooling Waterfrom a common tank when the row of cylinders is in a certain positionduring the rotation of the frame, whereas their pressure pipes lead to acommon collecting vessel rotating with the frame and from which a hotwater pump leads off the water.

An embodiment of the invention illustrates by way of example afour-stroke cycle piston internal combustion engine with six cylinderstars arranged one behind the other in a com-l mon frame, in which iFig. 1 is a front elevation partly in section.

Fig. 2 is a side elevation also partly in section.

The individual cylinders are designated by 25 and the common carryingframe by 26.

The liquid or gaseous fuel is supplied from the fuel tank 1 throughsupply pipe 2 and an annular distribution chamber 3 tothe carbu- Owingto the slow 2 507,379, and in Germany August 22, 1928.

The operation of the admission valves 4 and` also of the exhaust valves5 is effected from cam shafts 35 arranged on the cylinder frame 26, bymeans of valve levers 33 and valve rods 34 actuated from the crank shaftby means Aof toothed wheel drive 19. A

Magnetos 6 are provided for the ignition and supply their current to thesparking plugs The Water cooling works intermittently which isnecessitated by the construction of the engine, but in no way impairsthe reliable working thereof. A separate centrifugal pump 36 is providedfor the water cooling of each row of cylinders. During the slowrevolution of the cylinder frame 26 the extended dipper pipes 8 dipalternately into a tank 13 arranged at the bottom, which is providedwith a supply pipe 14 and a discharge pipe 15. The result is, that thejackets 7 of the cylinders are supplied for a certain time, about 10seconds, With cooling water through the feed pipes 9. whereas the hotwater flows off through the discharge pipes 10 into the tank 11 which ismounted on the shaft 30 and also rotates slowly with the cylinder frame26. The water is forced from the collecting tank 11 into the cooler bymeans of a pump 12 and after cooling is returned to the tank 13 throughthe pipe 14.

The drive of the separate centrifugal pumps 36 is eii'ected by electricmotors 37 supplied with current from a dynamo 16. The dynamo 16 isdriven from the crank shaft 30 and the current produced is transmittedto insulated collector bars 18 by means of a stationary sliding contact,the collector bars being fixed on the engine shaft and the current issupplied from these bars to the motors 3 As shown on the left side ofFig. 1, a hollow r axle arm 28 is flanged onto the cylinder frame 26.This arm can turn in an outer bearing :29 and'se'rves at the'same timefor the passage of the fuel feed pipe 2'.

The rotation of the cylinder frame 26 isp effected by a Worm gearr38with self-braking lo pitch. Thus it is possible to cut out entirelyV theslow rotation of the cylinder frame,- soV that the Working parts,especially the spark-V ing plugs, can be accurately controlled.

The exhaust gases are led off through theV 15 exhaust pipes 22 arrangedin star shape into a silencer preferably fitted behind the engine shaft.Y

I claim: n l Apiston internal combustion engine, com- 2m prising incombination a plurality of cylinderV stars arranged one" behind theother, a common frame carrying -said cylinder stars, a driving mechanismadapted to slowly rotate said cylinder frame Whilst the engine isrunning, and means to ensure uniform lubrication and Wear of the runningsurfaces, said driving `mechanism 4 being arranged and adapted to Varythe speed of rotation of the cylinder frame, and to be disconnectedtherefrom.

In testimony whereof I aflix my signature.

, ERICH WIPPERMANN.

